When you say it wouldnt work do you mean
A) the game wouldnt download?
B) it wouldnt install on your PC?
With this game you have to be VERY specific as to what you mean when you say " it wont work "
and Info on your system such as
Operating System you have
Processor type and speed
Amount of RAM
Video/Graphics card type such as the below exsample
Helps too
Also make sure you have the current version of DirectX 9c
All this info makes for easier help to trouble shoot what the issue maybe
Exsample:
I'm running Windows XP pro with a 2.4ghz AMD 64 X2 4600+ dual core Processor with 2 gig of ram and a 512 mb Nvidia GeForce 7300GT